Emergency Hydraulic starter for engine

Typing out loud; I SWAG, not many engines have a mounting location for 2 starters.
Many large vessels may already have air or hydraulic starters.

On smaller pleasure vessels, cost considerations, simplicity (turn key) or you can't get the wife down there to pump it up..

OTOH; major loss of DC power on a med to large vessel is deserving of a Darwin award, we don't want them back at the dock anyway.

I'm familiar with these engines when used as mains, but not at all as gensets.
On the starter, I agree with CR that a DC motor is simpler and more than good enough for pleasure boats, and any other redundancy - even if feasible - would be overkill.

Your photos made me curious about the differences with the same blocks when used as mains, though.
Am I right in seeing neither a heat exchanger nor an itercooler?
And is the big fan in the background meant to cool a huge radiator for the engine coolant?

Also, the rating must be well below the 1200hp @ 2300rpm that the same block can produced as propulsion engine.
Less than half the power @ 1800rpm, at a guess?
If it weren't for this reason (and also the huge radiator size!), I'd love not needing to bother with periodic CAC+HE removal and cleaning...

all boats have redundant battery banks so I cant imagine running out of DC power. And I always have a spare starter for the mains

interesting concept though.